#define _CRT_SECURE_NO_WARNINGS
#include"byy.h"
int main()
{
	int a = 1, b = 0,c;
	int i;
	for (i = 1; i <= 20; i++)
	{
		c = a + b;
		printf("%d ",a+b);
		a = b;
		b = c;
	}
	return 0;
}